"""input"""
#int-input
# input = sys.stdin.readline
def II(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(MI())
#str-input
def SI(): return input()
def MSI(): return input().split()
def SI_L(): return list(SI())
def SI_LI(): return list(map(int, SI()))
#multiple-input
def LLI(n): return [LI() for _ in range(n)]
def LSI(n): return [SI() for _ in range(n)]
#1-indexを0-indexでinput
def MI_1(): return map(lambda x:int(x)-1, input().split())
def TI_1(): return tuple(MI_1())
def LI_1(): return list(MI_1())

a = SI()
print("?",a+a)

for i in range(26):
    res = SI()
    print("?",res[1]+a)
    

# n,k = MI()
# h = LI()
# p = LLI(n)

# uf = dsu(n)

# def dis(p,q):
#     return (p[0]-q[0])**2 + (p[1]-q[1])**2


# edge = [set() for i in range(n)]
# for i in range(n):
#     for j in range(n):
#         if h[i] < h[j] and dis(p[i],p[j]) <= k**2:
#             edge[i].add(j)

# ans = 0
# for i in range(n):
#     if edge[i] == set():
#         ans += 1
# print(ans)